Ventilation grille



FIG. 1 is a bottom perspective view of a ventilation grille of theinstant invention;

FIG. 2 is a bottom view of the grille of FIG. 1;

FIG. 3 is a top view of the grille of FIG. 1;

FIG. 4 is a left side view of the grille of FIG. 1;

FIG. 5 is a right side view of the grille of FIG. 1;

FIG. 6 is a front side view of the grille of FIG. 1;

FIG. 7 is a rear side view of the grille of FIG. 1;

FIG. 8 is a bottom perspective view of another ventilation grille of theinstant invention;

FIG. 9 is a bottom view of the grille of FIG. 8;

FIG. 10 is a top view of the grille of FIG. 8;

FIG. 11 is a left side view of the grille of FIG. 8;

FIG. 12 is a right side view of the grille of FIG. 8;

FIG. 13 is a front side view of the grille of FIG. 8; and,

FIG. 14 is a rear side view of the grille of FIG. 8.

The broken lines illustrate portions of the ventilation grille that formno part of the claimed design.

CLAIM The ornamental design for a ventilation grille, as shown anddescribed.